Social brain hypothesis states that in general animals with a larger neocortex will be more independent because they can function more efficiently, thus negating any usefulness derived from being social
a. true
b. false
Ans: b. false
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Signal molecules that determine relative positions during development are known as
A. inductors. B. organizers. C. cadherin domains. D. derepressers. E. morphogens.
The European Neanderthals were replaced about 34,000 years ago by
A. Homo habilis. B. Homo erectus. C. Homo heidelbergensis. D. Neanderthals. E. Cro-Magnons.
Which of the following is an application of the first
law of thermodynamics? a. The level of entropy increases as time passes. b. Living organisms represent an exception to the laws of energy. c. The quantity of energy does not increase or decrease in the universe. d. Fungi and plants do not make their own energy but derive it from somewhere else. e. The amount of energy found in the compounds on one side of an equation is equal to that on the other side.
Since steroid receptors are located intracellularly, which of the following is true?
A) The receptor molecules are themselves lipids or glycolipids. B) The steroid/receptor complex can cross the nuclear membrane. C) The unbound steroid receptors are quickly recycled by lysosomes. D) The concentration of steroid receptors must be relatively high in most cells. E) The receptor molecules are free to move in and out of most organelles.